US20040231508A1 - Connecting rod for a piston of a compressor - Google Patents
Connecting rod for a piston of a compressor Download PDFInfo
- Publication number
- US20040231508A1 US20040231508A1 US10/847,011 US84701104A US2004231508A1 US 20040231508 A1 US20040231508 A1 US 20040231508A1 US 84701104 A US84701104 A US 84701104A US 2004231508 A1 US2004231508 A1 US 2004231508A1
- Authority
- US
- United States
- Prior art keywords
- connecting rod
- vibration damping
- bearing
- piston
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/144—Adaptation of piston-rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/12—Connection to driving members with piston-rods, e.g. rigid connections
Definitions
- the present invention relates to connecting rods for pistons of compressors.
- a piston rod of this type in a compressor is conventionally placed between the output of a drive device and a piston or a piston carrier of the compressor, to convert through the connecting rod the rotary, eccentric driven movement of the drive device into a reciprocating movement of the piston.
- Such an arrangement in a compressor is disclosed for example in the European patent document EP 12 33 183 A1. It has been shown that during the movement process of the piston with the piston and the valves of the compressor, vibrations are generated which are transmitted through the connecting rod and the connecting rod bearing. Further vibrations are generated by the drive device and its eccentric. These vibrations, due to the mechanical loads, can cause premature bearing damages and further have the disadvantage that thereby disturbing noise can be generated, which in particular is unpleasant when such compressors are incorporated for example in vehicles.
- a connecting rod for a piston of a compressor for a double piston comprising a portion supportable by a connecting rod bearing on an eccentric of a drive device, a coupling point provided at a distance from said portion for connecting with the piston; and at least one vibration damping device which in a course of the connecting rod is arranged between the connecting rod bearing and said coupling point.
- a compressor with the connecting rod designed in accordance with the present invention is especially advantageous for incorporation where the noise is especially undesirable, for example in vehicles.
- the construction of the connecting rod is simple, cost-favorable and operationally reliable. Due to the obtained vibration damping, an increase of the service life of the bearing can be provided.
- FIG. 1 is a schematic section of a piston with a connecting rod connected with it for a not shown compressor in accordance with one embodiment of the present invention
- FIG. 2 is a schematic section of a piston with a connecting rod connected therewith, which is substantially similar to FIG. 1, but designed in accordance with another embodiment of the present invention.
- FIG. 1 shows a piston of a substantially not shown compressor, which is provided with a not shown electric high power motor analogous to that disclosed in the European patent document EP 12 33 183 A1, assembled together to form a functional unit.
- the piston 10 is formed as a double piston which has an elongated piston carrier 11 . Its one end is provided with a first piston 12 with a greater diameter for a first pressure step and its opposite end it is provided with a second piston 13 with a smaller diameter for a second pressure stage. Due to the design of the piston 10 the compressor is formed as a two-stage compressor.
- the piston carrier 11 together with one of the pistons 12 , 13 , forms a single-piece component, which can be formed for example as a molded part of synthetic plastic or as an aluminum pressure cast part.
- the piston 10 in particular its piston carrier 11 is driven by means of a connecting rod 14 .
- the connecting rod 14 is rotatably supported on an eccentric 15 at the end of a shaft 16 by means of a bearing 17 , for example a ball bearing.
- the shaft 16 is a part of a drive device in form of a not shown electrical high power motor.
- the connecting rod 14 extends substantially parallel to the piston carrier 11 and substantially perpendicular to a longitudinal central axis of the shaft 16 .
- a transversely extending pin 18 is fixedly arranged on the piston carrier 11 . It is a solid component of the piston carrier 11 .
- a bearing 19 for example a ball bearing, is coupled turnable movable, in particular rotatable.
- the bearing 19 is supported in the inner ring fixedly on the pin 18 , while its outer ring is received non-rotatably in the connecting rod 14 .
- the other bearings 17 extends substantially in the same radial plane as the bearing 19 . However, it is radially offset to it, and with its inner ring it seats fixedly on the eccentric 15 .
- a vibration damping device 20 is arranged in the course of the connecting rod 14 between the connecting rod carrier 17 and the coupling point with the bearing 19 . It is provided in the region of the coupling point, for example of the bearing 19 , and/or as shown in FIG. 1, in the region of the connecting rod bearing 17 .
- the vibration damping device 20 has a vibration damping bearing receptacle 21 having a vibration damping layer 22 .
- the layer 22 is elastic, and can be formed in particular of rubber, synthetic rubber, etc.
- the above mentioned damping layer 22 has for example a hardness of substantially 80 ° Shore A.
- the vibration damping bearing receptacle 21 has a rubber spring, while in another not shown embodiment the bearing receptacle 21 can be formed of the vibration damping layer 22 .
- the connecting rod bearing 17 is embedded with its outer ring directly in the vibration damping layer 22 , which in turn is arranged in a receptacle 23 , in particular an opening, in the connecting rod 14 .
- the bearing receptacle 21 as the rubber spring shown in FIG. 1, it has two concentric rings 24 and 25 , in particular of metal.
- a ring-shaped layer 22 is provided between the rings 24 , 25 . It can be formed for example as a vulcanized rubber layer.
- the connecting rod 17 is embedded in the receptacle 23 of the connecting rod 14 .
- the arrangement of the vibration damping device 20 at this location is especially advantageous.
- the vibration damping layer 22 is designed so that in the peripheral direction it has a greater elasticity than in the radial direction. Preferably in the radial direction it is for example rigid.
- the bearing 19 of the coupling point can be embedded by means of a vibration damping bearing receptacle, analogously to the bearing receptacle 21 , into the connecting rod 14 and/or in a part of the piston 10 , for example of the piston carrier 11 .
- the at least one vibration damping device 20 Due to the arrangement of the at least one vibration damping device 20 , very good damping of vibrations is obtained, which are generated during the movement process of the piston 10 and are transmitted through the connecting rod 14 and the bearings 17 and 19 . On the other hand, they are generated by the not shown drive device and eccentric 15 . Such vibrations not only load the bearing, but also lead to disturbing noises which are especially undesirable when the thusly formed compressors are used for example in the motor vehicles. Due to the vibration damping device 20 , such vibrations in the region of the bearing receptacle 21 are taken by the layer 22 and dampened. Thereby a noise generation is reduced many times.
- the parts which correspond to the same parts of the first embodiment are identified with the same reference numerals, and therefore their repeated description is not provided.
- the second embodiment is different in that in the embodiment shown in FIG. 2 the pin 18 is mounted in an opening 26 of the connecting rod 14 , for example is pressed in it. It extends in a transverse direction in the drawings to the left over the connecting rod 14 and to the piston carrier 11 .
- the bearing 19 is arranged not at as shown in FIG. 1 in the connecting rod 14 , but instead in an opening 27 of the piston carrier 11 , in which the bearing 19 is held with its outer ring.
- the bearing inner ring is physically seated on the pin 18 .
- At least one vibration damping device 20 is arranged in the region of the connecting rod bearing 17 . It is formed in the same way as in the embodiment of FIG. 1. Also, in the second embodiment shown in FIG. 2, additionally or instead of it, the bearing 19 of the coupling point can be embedded by means of a vibration damping bearing receptacle 21 in a part of the piston 10 , in particular the piston carrier 11 .
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Compressor (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
A connecting rod for a piston of a compressor for a double piston has a portion supportable by a connecting rod bearing on an eccentric of a drive device, a coupling point at a distance from the portion for connecting with the piston, and at least one vibration damping device which in a course of the connecting rod is arranged between the connecting rod bearing and the coupling point.
Description
- The present invention relates to connecting rods for pistons of compressors.
- A piston rod of this type in a compressor is conventionally placed between the output of a drive device and a piston or a piston carrier of the compressor, to convert through the connecting rod the rotary, eccentric driven movement of the drive device into a reciprocating movement of the piston. Such an arrangement in a compressor is disclosed for example in the European
patent document EP 12 33 183 A1. It has been shown that during the movement process of the piston with the piston and the valves of the compressor, vibrations are generated which are transmitted through the connecting rod and the connecting rod bearing. Further vibrations are generated by the drive device and its eccentric. These vibrations, due to the mechanical loads, can cause premature bearing damages and further have the disadvantage that thereby disturbing noise can be generated, which in particular is unpleasant when such compressors are incorporated for example in vehicles. - Accordingly, it is an object of the present invention to provide a connecting rod of the above mentioned general type, which avoids the disadvantages of the prior art.
- More particularly, it is an object of the present invention to provide a connecting rod, which is designed so that when it is mounted in the compressor the vibrations generated in this region are dampened and thereby the produced noise is at least reduced.
- In keeping with these objects and with others which will become apparent hereinafter, one feature of the present invention resides, briefly stated, in a connecting rod for a piston of a compressor for a double piston, comprising a portion supportable by a connecting rod bearing on an eccentric of a drive device, a coupling point provided at a distance from said portion for connecting with the piston; and at least one vibration damping device which in a course of the connecting rod is arranged between the connecting rod bearing and said coupling point.
- When a connecting rod is designed in accordance with the present invention, then because of the at least one vibration damping device which is arranged in the course of the connecting rod between the connecting rod bearing and the coupling point, a very good vibration damping is obtained with the result that the generated noise is reduced many times.
- A compressor with the connecting rod designed in accordance with the present invention is especially advantageous for incorporation where the noise is especially undesirable, for example in vehicles.
- The construction of the connecting rod is simple, cost-favorable and operationally reliable. Due to the obtained vibration damping, an increase of the service life of the bearing can be provided.
- The novel features which are considered as characteristic for the present invention are set forth in particular in the appended claims. The invention itself, however, both as to its construction and its method of operation, together with additional objects and advantages thereof, will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.
- FIG. 1 is a schematic section of a piston with a connecting rod connected with it for a not shown compressor in accordance with one embodiment of the present invention;
- FIG. 2 is a schematic section of a piston with a connecting rod connected therewith, which is substantially similar to FIG. 1, but designed in accordance with another embodiment of the present invention.
- FIG. 1 shows a piston of a substantially not shown compressor, which is provided with a not shown electric high power motor analogous to that disclosed in the European
patent document EP 12 33 183 A1, assembled together to form a functional unit. - The
piston 10 is formed as a double piston which has anelongated piston carrier 11. Its one end is provided with afirst piston 12 with a greater diameter for a first pressure step and its opposite end it is provided with asecond piston 13 with a smaller diameter for a second pressure stage. Due to the design of thepiston 10 the compressor is formed as a two-stage compressor. - The
piston carrier 11 together with one of thepistons piston 10, in particular itspiston carrier 11 is driven by means of a connectingrod 14. - The connecting
rod 14 is rotatably supported on an eccentric 15 at the end of ashaft 16 by means of abearing 17, for example a ball bearing. Theshaft 16 is a part of a drive device in form of a not shown electrical high power motor. The connectingrod 14 extends substantially parallel to thepiston carrier 11 and substantially perpendicular to a longitudinal central axis of theshaft 16. In a radial distance from the eccentric 15, a transversely extendingpin 18 is fixedly arranged on thepiston carrier 11. It is a solid component of thepiston carrier 11. It extends from thepiston carrier 11 substantially parallel to the longitudinal central axis of theshaft 18 and in direction to it extends so far that the connectingrod 14 by means of abearing 19, for example a ball bearing, is coupled turnable movable, in particular rotatable. Thebearing 19 is supported in the inner ring fixedly on thepin 18, while its outer ring is received non-rotatably in the connectingrod 14. - The
other bearings 17, identified subsequently as a connecting rod bearing 17, extends substantially in the same radial plane as the bearing 19. However, it is radially offset to it, and with its inner ring it seats fixedly on the eccentric 15. In the course of the connectingrod 14 between the connectingrod carrier 17 and the coupling point with the bearing 19, avibration damping device 20 is arranged. It is provided in the region of the coupling point, for example of thebearing 19, and/or as shown in FIG. 1, in the region of the connecting rod bearing 17. Thevibration damping device 20 has a vibration damping bearingreceptacle 21 having avibration damping layer 22. Thelayer 22 is elastic, and can be formed in particular of rubber, synthetic rubber, etc. The above mentioneddamping layer 22 has for example a hardness of substantially 80° Shore A. - In the shown embodiment shown in FIG. 1, the vibration
damping bearing receptacle 21 has a rubber spring, while in another not shown embodiment thebearing receptacle 21 can be formed of thevibration damping layer 22. In this case the connecting rod bearing 17 is embedded with its outer ring directly in thevibration damping layer 22, which in turn is arranged in areceptacle 23, in particular an opening, in the connectingrod 14. In the design of thebearing receptacle 21 as the rubber spring shown in FIG. 1, it has twoconcentric rings shaped layer 22 is provided between therings receptacle 21 the connectingrod 17 is embedded in thereceptacle 23 of the connectingrod 14. The arrangement of thevibration damping device 20 at this location is especially advantageous. Thevibration damping layer 22 is designed so that in the peripheral direction it has a greater elasticity than in the radial direction. Preferably in the radial direction it is for example rigid. - In a not shown another embodiment, the bearing19 of the coupling point can be embedded by means of a vibration damping bearing receptacle, analogously to the
bearing receptacle 21, into the connectingrod 14 and/or in a part of thepiston 10, for example of thepiston carrier 11. - Due to the arrangement of the at least one
vibration damping device 20, very good damping of vibrations is obtained, which are generated during the movement process of thepiston 10 and are transmitted through the connectingrod 14 and thebearings vibration damping device 20, such vibrations in the region of thebearing receptacle 21 are taken by thelayer 22 and dampened. Thereby a noise generation is reduced many times. - In the second embodiment shown in FIG. 2 the parts which correspond to the same parts of the first embodiment are identified with the same reference numerals, and therefore their repeated description is not provided. The second embodiment is different in that in the embodiment shown in FIG. 2 the
pin 18 is mounted in an opening 26 of the connectingrod 14, for example is pressed in it. It extends in a transverse direction in the drawings to the left over the connectingrod 14 and to thepiston carrier 11. In the region of the coupling point, thebearing 19 is arranged not at as shown in FIG. 1 in the connectingrod 14, but instead in an opening 27 of thepiston carrier 11, in which thebearing 19 is held with its outer ring. On the other hand the bearing inner ring is physically seated on thepin 18. - Also, in FIG. 2, in correspondence with the first embodiment, at least one
vibration damping device 20 is arranged in the region of the connecting rod bearing 17. It is formed in the same way as in the embodiment of FIG. 1. Also, in the second embodiment shown in FIG. 2, additionally or instead of it, the bearing 19 of the coupling point can be embedded by means of a vibrationdamping bearing receptacle 21 in a part of thepiston 10, in particular thepiston carrier 11. - It will be understood that each of the elements described above, or two or more together, may also find a useful application in other types of constructions differing from the types described above.
- While the invention has been illustrated and described as embodied in connecting rod for a piston of a compressor, it is not intended to be limited to the details shown, since various modifications and structural changes may be made without departing in any way from the spirit of the present invention.
- Without further analysis, the foregoing will so fully reveal the gist of the present invention that others can, by applying current knowledge, readily adapt it for various applications without omitting features that, from the standpoint of prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention.
Claims (17)
1. A connecting rod for a piston of a compressor for a double piston, comprising a portion supportable by a connecting rod bearing on an eccentric of a drive device, a coupling point provided at a distance from said portion for connecting with the piston; and at least one vibration damping device which in a course of the connecting rod is arranged between the connecting rod bearing and said coupling point.
2. A connecting rod as defined in claim 1 , wherein said vibration damping device is arranged in a region of said coupling point.
3. A connecting rod as defined in claim 2 , wherein said vibration damping device is arranged in said region of said coupling point and in a region of a bearing in said coupling point.
4. A connecting rod as defined in claim 1 , wherein said vibration damping device is arranged in a region of the connecting rod bearing.
5. A connecting rod as defined in claim 1 , wherein said vibration damping device is formed as a vibration damping bearing receptacle.
6. A connecting rod as defined in claim 5 , wherein said vibration damping bearing receptacle is formed as a vibration damping layer.
7. A connecting rod as defined in claim 6 , wherein said vibration damping layer of said bearing receptacle is formed elastically.
8. A connecting rod as defined in claim 7 , wherein said vibration damping layer of said bearing receptacle is composed of a material selected from the group consisting of rubber and synthetic rubber.
9. A connecting rod as defined in claim 8 , wherein said vibration damping layer has a hardness of substantially 80° shore A.
10. A connecting rod as defined in claim 5 , wherein said vibration damping bearing receptacle is composed of a vibration damping layer.
11. A connecting rod as defined in claim 5 , wherein said vibration damping bearing receptacle has a rubber spring.
12. A connecting rod as defined in claim 11 , wherein said rubber spring has two concentric rings composed of metal and a ring-shaped rubber layer provided between said rings.
13. A connecting rod as defined in claim 12 , wherein said ring-shaped rubber layer is formed as a vulcanized layer.
14. A connecting rod as defined in claim 6 , wherein said vibration damping layer is formed so that in a peripheral direction it has a greater elasticity than in a radial direction.
15. A connecting rod as defined in claim 14 , wherein said vibration damping layer is formed so that it is relatively rigid in said radial direction.
16. A connecting rod as defined in claim 1 , wherein said connecting rod bearing is embedded in said connecting rod by means of a vibration damping bearing receptacle.
17. A connecting rod as defined in claim 1 , wherein said bearing of said coupling point is embedded by means of a vibration damping bearing receptacle in a component selected from the group consisting of a connecting rod and a part of the piston.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10323125A DE10323125A1 (en) | 2003-05-22 | 2003-05-22 | Connecting rod for the piston of a compressor |
DE10323125.0 | 2003-05-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040231508A1 true US20040231508A1 (en) | 2004-11-25 |
Family
ID=33039264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/847,011 Abandoned US20040231508A1 (en) | 2003-05-22 | 2004-05-17 | Connecting rod for a piston of a compressor |
Country Status (4)
Country | Link |
---|---|
US (1) | US20040231508A1 (en) |
EP (1) | EP1479909B1 (en) |
DE (2) | DE10323125A1 (en) |
PL (1) | PL1479909T3 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016001595A1 (en) * | 2016-02-11 | 2017-08-17 | Wabco Gmbh | Reciprocating piston engine, in particular two- or multi-stage piston compressor, compressed air supply system, compressed air supply system and vehicle, in particular passenger car with a compressed air supply system |
DE102018128557A1 (en) * | 2018-11-14 | 2020-05-14 | Wabco Gmbh | Reciprocating machine, compressed air supply system, vehicle and method for producing a reciprocating machine |
DE102018130887A1 (en) | 2018-12-04 | 2020-06-04 | Amk Holding Gmbh & Co. Kg | Piston compressor |
DE102020134398A1 (en) | 2020-12-21 | 2022-06-23 | Amk Holding Gmbh & Co. Kg | Pistons and piston compressors |
DE102023104247A1 (en) | 2022-02-25 | 2023-08-31 | Amk Holding Gmbh & Co. Kg | Compressor device and related compressed air supply system, electric motor for a compressor device and vehicle and method for producing a compressor device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2343211A (en) * | 1943-01-26 | 1944-02-29 | Gen Electric | Reciprocating compressor |
US3574293A (en) * | 1968-11-05 | 1971-04-13 | Joseph A Vriend | Antiknock bearing device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9408373D0 (en) * | 1994-04-23 | 1994-06-15 | Ford Motor Co | Engine with variable compression ratio |
DE10042214C2 (en) * | 2000-08-28 | 2002-06-20 | Knorr Bremse Systeme | Piston compressor with dynamic mass balancing in the area of crank drives, especially for rail vehicles (balancing connecting rods) |
DE10155776A1 (en) * | 2001-11-14 | 2003-05-22 | Helmut Obieglo | Piston assembly, to pump or lightly compress a gas medium, has an eccentric or crank to drive the piston in its cylinder coupled to a spring transmission to the piston |
-
2003
- 2003-05-22 DE DE10323125A patent/DE10323125A1/en not_active Withdrawn
-
2004
- 2004-04-03 EP EP04008174A patent/EP1479909B1/en not_active Expired - Fee Related
- 2004-04-03 PL PL04008174T patent/PL1479909T3/en unknown
- 2004-04-03 DE DE502004000745T patent/DE502004000745D1/en not_active Expired - Lifetime
- 2004-05-17 US US10/847,011 patent/US20040231508A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2343211A (en) * | 1943-01-26 | 1944-02-29 | Gen Electric | Reciprocating compressor |
US3574293A (en) * | 1968-11-05 | 1971-04-13 | Joseph A Vriend | Antiknock bearing device |
Also Published As
Publication number | Publication date |
---|---|
EP1479909A1 (en) | 2004-11-24 |
DE502004000745D1 (en) | 2006-07-27 |
EP1479909B1 (en) | 2006-06-14 |
DE10323125A1 (en) | 2004-12-16 |
PL1479909T3 (en) | 2006-09-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |